This photo clearly shows my Great Aunt Emma (in the back seat). I think it's about 1920 based on a passport application photo I have of her taken in 1922 shortly after her husband Daniel Grundy died (in 1921). The two images of her are very similar hence my guess at the year.
She was born in 1860, so that would makes her about 60 and if it is 1920, then the gentleman in the drivers seat may well be my Great Uncle Daniel! If it's 1920, before he died then he'd be 66. Does he look that age to you? Otherwise it could be his eldest son at age 36?
Does anyone recognise the car? Make / year / model?